Intermittent-motion mechanism.



G. E. UEBELMBSSER. INTBRMITTENT MOTION MECHANISM.

APPLIOATIOH run we. 14, 19 8.

WITNESSES:

. il'zgm S UNITED ATES PATEJT OFFECE.

CHARLES R. UEBELMESSER, OI NEW YORK. 1.. Y., ASSIGNOR TO AMERICA-" IvICVIN PICTURE MACHINE COBIPANY, OF NEW YORK. N. Y.. A CORPORATION OF NEEV YGRK.

INTERMITTENT-IJIGTION IIECHANISBI.

Application filed August 14, 1908.

Specification of Letters Patent.

Patented J My 19, 1910. Serial No. 448,519.

.York in the county of New York and State w a i of New York, United flutes of America, 3

have invented certain new and :isefui linprcoements in lntermitteohMotion Mechunmm, o which the billowing is a specification. i

y invcnlion relates to u nicehnnism or iri to he noted that the under ide or the changing a continuous rotary motion into an intermittent. motion, and is especially aclopb able for use in conjunction with thatpart of :1 mechanism of 11 moving picture muehine which is used for driving the film. its ohjeet is to improve upon such apparatus as has heretofore hocn known in the art and to provide a simple and ellicient zrrrzuigemcnt oi pa'ris for the above purpose.

To these ends my invention consists in the eonstruction and arrangement of parts which 5 1 will describe in the following spccilieation and the novel features of which will he set i'orlh in zip 'n-ndul onions.

Referring to the drawings, Figure l is :1 1

front elevntien of u rotary driving meehzu'r hill on the end of a driving shaft with 2 Cuill'i llg driven part unheated 1H dotted lines.

high. :2 and are simihir views of the same arts shown in dili'erent relative positions. '1 he latter figure shows a part or the irzune of a machine to which this mechanism 15 upplied. F g. 4 is u sectional side elevation of thepa rts shown in lJ'rJ. 25 together with thai part which is indicated in the hitter figure by dotted lines. The section in this figure is taken on the line 4 L of hi 23. lii 5 -.-;ho\vs in front elevation 21 modiiied form of my invention. Fig. 6 :1 plan view of the lliljtililiilnlll shown in Fig. 5 together with lhe driven memher which is indicnled by dotted lines in Fig. .3.

Like characters or" reference designate correspondin; parts in all of the figures.

' 1O designates :1 support for the mechanism. This support may he a portion of the frame of :1 moving picture onuzhine.

11 is a driving shaft to which a rotary motion is imparted hy any suitable motive power.

l2 is a stationary housing afiixed t0 the i i l l l i i e l 1 l l i l l l support-1C and incloeing :1 part of the mechanism which I 21111 about to describe.

i is a rotating member up n the driving shaft 11 21nd :iliixed ihereto by u :CL screw 21. pin :22 is pivotzdiy mounted in the rotating memhvr and to this pin are rigidly :illixed u euin and :1 driv ng finger ill. A circular huh :2? proje is from the forward end ol the rotating memher and is cut away at it to clear the driving linger 2- riphery of the wheel s milled out on a idius c rrespomling with that of the hub 3. Such :1 wheel as this, when driven by u pin, soon-(hoe; culled :1 Geneva. gear. it is the ohjeci. of [his invention to improve upon gears of ihis kind. When the driving shaft 11 is l'olnlcd it \viil curry he piu and its connected puris with it. hen the driving linger 14, moving in the direction of the arrow, reaches the p int at which it is hillHHi in Fig. l, it \vill'stnud at, an angle which is parallel with that of one of the slots 352. In this Fig. l the driving finger is justenlering one of these slots, and as it eonlinues its movement it, will travel into this slot mid come out of it again when it has reached the po itiun shown in Fig. :2, having, in he menmimc,imparted :1 quarter of :ti'evi'ilution to the heel a l and having itself rotated near]; :1 hall of it revolution about its pin. If left in (his position during the remainder of the rotation of shaft; 11, this driving finger 2i would not he in proper position to enter one of the slots 132. in order lo'liring it iidu the proper position to perlorm this 'l'm ction l. have associated with it- 100 ing 12. During the further rotation of ll1tfl I vonipri ing a driven member provided with 11 one of the long sides of ram 2? will slide up over ramlat-e H. and these two parts acting togeth r will turn the pin 2; and the driving finger 2+ uinil tlnlatter has been brought into proper po ition to repeat the opt-ration above desertbcd. in Fig. 3 the rain has been moved up over the ram fare and has eonipleted its part of the operation.

I have shown the manner in which a quarter of a revolution is imparted to the shaft 2H) during a portion of the revolution of the driving hat't. ll. During the re maiuder of one revohuion of the driving shall. 11 the shaft 30 remains at rest. In order to hold it positively at. rest and also to insure the slot 32 remaining in proper position for the intake of the driving linger 24 when the latter is again brought around to the wheel 31. the outer c 'liudrical surface of the lmb 25 rests in the porti ns 33 of the peripheav of thewheel 31. The part of the hub opposite the driving linger is rut away so that it does notinterfere with the rotation of wheel 31 at this )oint.

The driving linger is of a width app oximatcly that of the slots 3;. so that it has a large bearing sllll'ztre which will not wear out nor rut the sides of the slots or grtmves 3'. as does the. pin heretofore used. Su'eh devices, when applied to the film driving nu-ehanisms of moving picturemachines. are subjected to great wear. and'my invention not only insures long life to thispart of the apparatus. but, provides means for giving the desired intermittentmotion to the film in a positive and steady manner.

In Figs. 5 and G I have shown a modification of my invention. In this case the driven member is constructed as bel'ore described. The driving'finger 24 and the pin 22 are similar-to those before described.

-The cam 23" is also similar to the cam before described, exceptthat its sides may be flat instead of curved. The housing 1'22, however, has no internal cam face but in this case a spring 27 is provided which is allixed to the housing 12'? and is arranged to pass through 'an opening. in. the housing and to engage the sides of the cam 23. As the cam 23'. rotates from left to right the spring 27' will turn it about its pivot until its sides are in engagement with the spring, that, the driving finger will assume and be maintained in the required position. Otherwise the operation of this form of my invention is similar to that before described.

1 have. illustrated more than one form of my invention to show that I do not limitmysell' to any specilio form, of construction of the parts.

What. I claim is:

1. An intermittent motion mechanism a slot having a flat side. a driving finger,

also having a flat side. arraiigt-tPto revolve ab ut an axis external to said liiiger and to engage with the slot during a portion of its revolutions. and mean for bringing the side. if the driving linger into aliuement with the side of the slot at a desired part of its revolutions.

L. .\n intermittent motion mechanism comprising a driven member provided with a slot having fiat parallel sides. a driving finger. also having llat parallel sides, arranged to revolve about'an axis external to said finger and to lit into the slot during a portion of its revolutions. and means for bringing saiddriving linger into position with its sides in alinement with the sides of the slot at a desired part of its revolutions;

nu-ebai ism 3. An intermittent motion compri ing a driven member provided with a parallel itl0tl slot. at driving linger arranged to revolve about an axis external to said linger. a pivot for the driving linger. a ram upon said pi vot. a stationary member having a cam surface. said driving linger being arranged to tit into the slot during a portion of itsrevolutions. said ram and cam surface being arranged to bring the driving linger into aliuement with the lot at a desired part of its revolutions.

4. An intermittent motion met-lianism comprising a driven member provided with a pair of slots disposed at right-angles to each other. a driving linger arranged to revolve about an axis external to said linger and to engage with one or the other of said slots alternately during a portion of each of its revolutions. and means for bringing said driving linger into alinement with one of the slots at a desired part of its revolutions.

5. An intermittent motion mechanism a pair of slots disposed at right-angles to each other. a driving linger arranged to revolve about an axis external to said linger, a pivot. for the driving linger. a ram upon said pivot. a stationary member having a. cam surt'aee..said driving lingerbeing ar- 'anged to tit into one of the slots during a. portion of each of its revolutions. said team and cam surface being arranged to bring the driving fin' er into alineniutt with one of the slots at a d esired-part of each ot' its revohr tions.

(5. An intermittent motion mechanism comprisin a driven member provided with a pair 0? parallel-sided slots -disposed at right-angles to each other, a driving finger arranged to revolve about an axis external to said linger, and to fit into one or the other of the slots during a portion of each of its revolutions, a pivot for the driving fin er, a cam upon said pivot, a stationary mem or having a cam surface, said can! and cam surface being arranged to bring the driv- 5 ing finger into alinementwith one of the slots at a desired part of each of its revolutions. and means for holding the driven member during that part of the revolutions of the driving finger about its external nxie in which it is not in engagement ith one 0% 10 the slots.

In testimony whereof I have signed my nznne to this specification in the presence of 

